Russian sarafan, as the person whom I pinned this from said, it's out of period, but still lovely. According to this source: it's a Sarafan from the province of Tver.-- Reference for Princess of Russia
Russian Sarafan - It is a pinafore-like dress that hangs from under the arms down to the ankles. It used to be worn by women in Russia. It might have been derived from the panjova, another Russian garment.
Fashions of London and Paris, April How awesome are these gowns? I LOVE the asymmetry of the gown on the right with that wide lace band, and y'all know I’m a sucker for capes like the gown on the left. And two bonus pieces of lovely headwear!
Journal des Dames et des Modes, Costume Parisien I’m in love with this gown. I really like the use of red for the unusual trimming, and I think her sleeves are lovely. Her bonnet is bold and charming and LOOK AT THAT RETICULE!